Obama. did not look very presidential during his broadcast 'warning'. He almost looked bored. There was no sense of urgency in body language or tone. His speech was noticeably stilted, choppy, and repetitive (more so than usual).

Quoting: craftybiatchytwo

Well he couldn't because the storm hadn't hit yet. His later appearances in dealing with this issue and other issues about to come to light will be presidential. The very act of him coming out to make announcement of a storm which could turn out to be Irene-like and make him lose credibility is very unusual. In the past, such announcements were made by the MSM and agencies.

Obama's body language was like he knew something. He looked rough as in to indicate the seriousness of his announcement and get the ball rolling. Like he has been busy at an all day meeting.